/*
 * @lc app=leetcode.cn id=面试题 16.19 lang=java
 * @lcpr version=
 *
 * [面试题 16.19] 水域大小
 * 
 * 27/27 cases passed (11 ms)
 * Your runtime beats 45.14 % of java submissions
 * Your memory usage beats 73.04 % of java submissions (73.1 MB)
 */


// @lcpr-template-start

// @lcpr-template-end
// @lc code=start

import java.util.Arrays;

class Solution {
    int[] map = new int[1001];
    boolean[][] vis;
    int[][] land;
    int[][] dirs = {{0,-1},{0,1},{-1,0},{1,0},{-1,-1},{1,-1},{-1,1},{1,1}};
    public int[] pondSizes(int[][] land) {
        vis = new boolean[land.length][land[0].length];
        this.land = land;
        int[] sum = new int[1];
        int cnt = 0;
        for(int i = 0; i < land.length; i++) {
            for(int j = 0; j < land[0].length; j++) {
                sum[0] = 0;
                dfs(i, j, sum);
                if (sum[0] != 0) {
                    map[sum[0]]++;
                    cnt++;
                }
            }
        }
        // System.out.println(Arrays.toString(map));
        int[] ans = new int[cnt];
        int p = 0;
        for(int i = 0; i < map.length; i++) {
            int j = map[i];
            while(j > 0) {
                ans[p++] = i;
                j--;
            }
        }
        return ans;

    }
    void dfs(int x, int y, int[] sum) {
        if (x < 0 || y < 0) return;
        if (x >= land.length || y >= land[0].length) return;
        if (vis[x][y]) return;
        if (land[x][y] != 0) return;

        sum[0]++;
        vis[x][y] = true;

        for(var dir: dirs) {
            dfs(x + dir[0], y + dir[1], sum);
        }
    }
}
// @lc code=end



/*
// @lcpr case=start
// [[0,2,1,0],[0,1,0,1],[1,1,0,1],[0,1,0,1]]\n
// [[]]\n
// [[1]]\n
// [[0]]\n
// [[2,8,8,4,1,7,1,5,4,2,0,8,1,9,2,5,6,9,7,4,8,9,1,7,3,6,9,3,7,1,5,7,3,1,9,9,9,6,5,1,9,9,4,1,6,4,7,6,1,6,1,3,3,9,0,3,0,0,0,1,3,1,2,0,0,0,3,2,7,3,6,7,9],[2,0,9,8,2,0,5,8,4,0,4,5,2,1,5,6,0,6,3,3,6,9,5,4,0,9,4,7,1,4,2,8,9,8,0,6,3,5,7,2,1,6,8,4,8,4,6,5,0,3,7,1,7,6,3,0,2,2,2,3,2,4,7,7,6,8,2,9,2,5,0,3,8],[2,7,0,1,1,3,6,5,6,0,7,0,2,4,5,0,3,7,3,1,5,7,9,8,8,0,9,8,1,9,4,7,5,6,5,4,1,7,7,4,4,3,8,3,5,3,3,8,7,4,5,4,8,0,2,0,4,7,5,4,3,9,1,9,4,9,2,2,2,4,1,2,9],[6,0,4,4,6,7,8,8,9,9,5,4,9,7,0,4,2,7,1,9,2,2,9,2,4,3,0,5,1,7,8,9,0,5,3,3,3,1,1,7,1,2,7,5,6,8,7,2,3,1,5,3,5,7,9,7,7,8,8,7,2,4,4,2,8,2,3,2,1,9,1,2,7],[2,5,1,2,2,5,8,2,8,7,4,5,9,8,9,6,0,9,7,0,5,8,8,3,3,8,1,9,4,8,2,3,4,9,1,2,4,5,1,5,4,4,6,9,2,3,3,1,2,2,4,1,2,7,4,6,9,2,3,5,9,7,7,4,9,9,4,7,1,5,5,7,6],[9,9,9,1,8,3,3,4,6,5,7,7,3,1,1,3,9,2,7,0,6,8,8,0,2,9,6,6,4,4,6,2,6,6,1,7,5,6,4,9,6,9,8,2,1,4,3,4,6,6,8,6,4,7,8,3,7,1,3,7,5,3,2,1,4,7,9,7,3,4,9,0,1],[7,1,4,9,7,2,1,9,0,9,7,4,5,3,5,2,6,5,6,0,5,0,5,3,1,1,7,9,6,2,1,8,3,4,7,4,2,1,3,5,9,7,7,5,6,1,0,3,6,3,7,9,6,5,1,4,5,7,2,3,5,3,5,2,0,9,5,1,8,6,0,0,6],[7,9,9,8,8,3,9,7,5,1,1,8,4,4,6,3,7,2,1,9,5,6,1,2,2,5,6,3,9,6,7,9,2,7,1,4,7,3,5,0,1,2,2,5,4,9,3,1,2,1,1,0,5,1,8,4,2,1,2,4,5,4,5,6,8,7,7,4,8,3,2,7,9],[6,6,6,7,0,8,7,6,2,6,3,1,4,6,6,9,6,2,0,5,4,9,9,9,8,8,6,2,4,3,1,6,6,4,4,4,3,1,8,1,8,3,9,5,2,7,0,0,4,0,6,9,2,0,3,1,6,3,0,7,9,3,9,4,3,6,7,9,8,9,4,2,7],[7,8,1,8,5,3,5,1,2,9,6,2,8,7,9,7,7,8,6,3,4,4,3,2,8,6,5,7,8,5,7,5,8,3,9,6,8,9,6,6,8,7,4,9,4,6,1,1,6,7,5,6,7,0,3,3,9,3,6,1,3,8,1,2,8,3,3,6,7,9,4,4,1],[0,7,6,7,6,4,3,1,7,8,0,0,3,1,1,7,9,2,7,9,4,9,6,2,6,6,4,0,1,8,5,6,8,1,3,8,3,7,7,9,8,4,2,8,2,5,5,9,3,3,1,6,3,1,5,2,0,4,2,2,5,4,3,4,6,7,3,4,5,1,5,7,2],[1,7,7,6,3,4,1,8,4,3,9,8,1,5,5,4,7,7,1,8,5,7,6,4,2,6,7,7,1,3,1,7,4,8,5,2,3,9,1,2,8,2,2,0,4,5,6,1,0,4,4,2,4,9,2,4,8,2,5,5,8,2,4,8,9,3,9,1,4,5,5,5,1],[0,1,1,8,9,1,0,1,3,0,5,9,3,4,1,7,1,2,1,7,3,4,2,7,2,9,9,7,4,8,7,4,2,6,7,8,8,4,9,6,5,9,6,3,0,0,0,6,4,0,9,8,1,7,0,9,9,3,7,5,8,9,4,9,9,1,2,7,5,3,2,2,3],[8,8,1,9,4,8,6,7,4,8,7,7,3,1,6,2,6,3,2,8,4,9,3,5,3,7,1,1,3,7,5,6,6,1,9,3,0,6,1,7,5,1,8,1,6,7,1,8,2,2,0,5,1,0,7,6,7,9,3,2,7,8,5,5,2,1,2,3,0,1,5,0,7],[8,1,9,4,4,5,8,3,8,5,2,3,8,4,5,6,5,0,4,0,6,7,5,5,2,7,8,5,2,1,4,9,5,1,3,4,8,7,7,3,8,5,1,5,5,9,3,9,0,0,0,8,0,4,0,5,3,8,5,1,5,0,1,7,1,3,7,4,2,9,5,5,4],[5,3,5,5,4,4,1,5,6,1,7,4,0,7,5,8,0,3,6,7,0,4,4,8,3,2,6,3,8,0,9,8,9,9,3,2,7,6,9,6,3,1,8,8,6,4,9,4,4,2,7,5,0,1,5,0,8,9,4,1,6,9,8,7,0,1,7,3,4,6,1,1,8],[1,9,5,4,1,7,0,6,3,2,1,5,3,1,8,7,5,7,6,6,8,0,3,8,8,2,5,6,7,2,7,8,2,1,5,3,9,3,5,2,2,9,4,7,8,6,7,7,9,8,6,3,0,6,9,7,3,1,9,1,9,1,5,6,3,7,1,0,8,9,9,8,1],[5,8,5,7,7,8,0,7,9,2,0,4,5,8,8,7,8,6,5,4,6,3,4,1,7,2,8,7,4,7,5,2,5,5,9,3,3,7,1,6,5,1,9,5,5,5,6,2,1,3,6,8,1,0,5,2,8,8,9,9,3,0,5,3,3,8,1,4,5,8,3,2,7]]\n
// @lcpr case=end

// @lcpr case=start
// [[2,8,8,4,1,7,1,5,4,2,0,8,1,9,2,5,6,9,7,4,8,9,1,7,3,6,9,3,7,1,5,7,3,1,9,9,9,6,5,1,9,9,4,1,6,4,7,6,1,6,1,3,3,9,0,3,0,0,0,1,3,1,2,0,0,0,3,2,7,3,6,7,9],[2,0,9,8,2,0,5,8,4,0,4,5,2,1,5,6,0,6,3,3,6,9,5,4,0,9,4,7,1,4,2,8,9,8,0,6,3,5,7,2,1,6,8,4,8,4,6,5,0,3,7,1,7,6,3,0,2,2,2,3,2,4,7,7,6,8,2,9,2,5,0,3,8],[2,7,0,1,1,3,6,5,6,0,7,0,2,4,5,0,3,7,3,1,5,7,9,8,8,0,9,8,1,9,4,7,5,6,5,4,1,7,7,4,4,3,8,3,5,3,3,8,7,4,5,4,8,0,2,0,4,7,5,4,3,9,1,9,4,9,2,2,2,4,1,2,9],[6,0,4,4,6,7,8,8,9,9,5,4,9,7,0,4,2,7,1,9,2,2,9,2,4,3,0,5,1,7,8,9,0,5,3,3,3,1,1,7,1,2,7,5,6,8,7,2,3,1,5,3,5,7,9,7,7,8,8,7,2,4,4,2,8,2,3,2,1,9,1,2,7],[2,5,1,2,2,5,8,2,8,7,4,5,9,8,9,6,0,9,7,0,5,8,8,3,3,8,1,9,4,8,2,3,4,9,1,2,4,5,1,5,4,4,6,9,2,3,3,1,2,2,4,1,2,7,4,6,9,2,3,5,9,7,7,4,9,9,4,7,1,5,5,7,6],[9,9,9,1,8,3,3,4,6,5,7,7,3,1,1,3,9,2,7,0,6,8,8,0,2,9,6,6,4,4,6,2,6,6,1,7,5,6,4,9,6,9,8,2,1,4,3,4,6,6,8,6,4,7,8,3,7,1,3,7,5,3,2,1,4,7,9,7,3,4,9,0,1],[7,1,4,9,7,2,1,9,0,9,7,4,5,3,5,2,6,5,6,0,5,0,5,3,1,1,7,9,6,2,1,8,3,4,7,4,2,1,3,5,9,7,7,5,6,1,0,3,6,3,7,9,6,5,1,4,5,7,2,3,5,3,5,2,0,9,5,1,8,6,0,0,6],[7,9,9,8,8,3,9,7,5,1,1,8,4,4,6,3,7,2,1,9,5,6,1,2,2,5,6,3,9,6,7,9,2,7,1,4,7,3,5,0,1,2,2,5,4,9,3,1,2,1,1,0,5,1,8,4,2,1,2,4,5,4,5,6,8,7,7,4,8,3,2,7,9],[6,6,6,7,0,8,7,6,2,6,3,1,4,6,6,9,6,2,0,5,4,9,9,9,8,8,6,2,4,3,1,6,6,4,4,4,3,1,8,1,8,3,9,5,2,7,0,0,4,0,6,9,2,0,3,1,6,3,0,7,9,3,9,4,3,6,7,9,8,9,4,2,7],[7,8,1,8,5,3,5,1,2,9,6,2,8,7,9,7,7,8,6,3,4,4,3,2,8,6,5,7,8,5,7,5,8,3,9,6,8,9,6,6,8,7,4,9,4,6,1,1,6,7,5,6,7,0,3,3,9,3,6,1,3,8,1,2,8,3,3,6,7,9,4,4,1],[0,7,6,7,6,4,3,1,7,8,0,0,3,1,1,7,9,2,7,9,4,9,6,2,6,6,4,0,1,8,5,6,8,1,3,8,3,7,7,9,8,4,2,8,2,5,5,9,3,3,1,6,3,1,5,2,0,4,2,2,5,4,3,4,6,7,3,4,5,1,5,7,2],[1,7,7,6,3,4,1,8,4,3,9,8,1,5,5,4,7,7,1,8,5,7,6,4,2,6,7,7,1,3,1,7,4,8,5,2,3,9,1,2,8,2,2,0,4,5,6,1,0,4,4,2,4,9,2,4,8,2,5,5,8,2,4,8,9,3,9,1,4,5,5,5,1],[0,1,1,8,9,1,0,1,3,0,5,9,3,4,1,7,1,2,1,7,3,4,2,7,2,9,9,7,4,8,7,4,2,6,7,8,8,4,9,6,5,9,6,3,0,0,0,6,4,0,9,8,1,7,0,9,9,3,7,5,8,9,4,9,9,1,2,7,5,3,2,2,3],[8,8,1,9,4,8,6,7,4,8,7,7,3,1,6,2,6,3,2,8,4,9,3,5,3,7,1,1,3,7,5,6,6,1,9,3,0,6,1,7,5,1,8,1,6,7,1,8,2,2,0,5,1,0,7,6,7,9,3,2,7,8,5,5,2,1,2,3,0,1,5,0,7],[8,1,9,4,4,5,8,3,8,5,2,3,8,4,5,6,5,0,4,0,6,7,5,5,2,7,8,5,2,1,4,9,5,1,3,4,8,7,7,3,8,5,1,5,5,9,3,9,0,0,0,8,0,4,0,5,3,8,5,1,5,0,1,7,1,3,7,4,2,9,5,5,4],[5,3,5,5,4,4,1,5,6,1,7,4,0,7,5,8,0,3,6,7,0,4,4,8,3,2,6,3,8,0,9,8,9,9,3,2,7,6,9,6,3,1,8,8,6,4,9,4,4,2,7,5,0,1,5,0,8,9,4,1,6,9,8,7,0,1,7,3,4,6,1,1,8],[1,9,5,4,1,7,0,6,3,2,1,5,3,1,8,7,5,7,6,6,8,0,3,8,8,2,5,6,7,2,7,8,2,1,5,3,9,3,5,2,2,9,4,7,8,6,7,7,9,8,6,3,0,6,9,7,3,1,9,1,9,1,5,6,3,7,1,0,8,9,9,8,1],[5,8,5,7,7,8,0,7,9,2,0,4,5,8,8,7,8,6,5,4,6,3,4,1,7,2,8,7,4,7,5,2,5,5,9,3,3,7,1,6,5,1,9,5,5,5,6,2,1,3,6,8,1,0,5,2,8,8,9,9,3,0,5,3,3,8,1,4,5,8,3,2,7]]\n
// @lcpr case=end

 */

